Internal-combustion engine



June 5, 1923. 1,457,695

s.` l. Fl-:KETE ET AL INTERNAL COMBUSTION ENGINE 2VheetsSheet l File'd Aug. 16, 1919 INVENJmVS: @f fM/fwl June 5, 1923.

' 1,457,695 s. l. FEKETE E'r Al.

INTERNAL GOMBUS'IION ENGINE Filed Aug. les, 1919 2 Sheets-Sheet 2 INVENJTUVS: JM @MW/M58@ Patented June 5, 1923.

Ultra; stars;

` ssamm i. FEKETaL-aa STUART. BAITS, ORM-alicia ilCaIIGANx 'Assiemag- T95 Essaxvoroas orv Demora MlCHIGAN, A. coaroaarilar;MCHIGfANL ,INTERNALeGOMBUSTLQN.ENGINE;

application 1aed August 1e, 1919, Seriana.'312954.,

f Toc/,ZZ wlw/[mit may. concern.'

f Beit know-n that-we, S'mPHEN ILFEKETE, an subject of the King-sof- `Hungary, residing at Detroit, county of 7ayne,State of Michigan, an'dfSTUAim G; Biui'is, a citizenof .the

` United' States, residing at Detroit.` vcounty ofy Wtayne, State-LoffMichigan, haveiinvented certain new. anduseful Improvement in Internal-Combustion Engines, of. which thel l0 following-isla specification, lreference being` had-tlrerein: to .the .accompanying drawings.

Our iuvfentionf'relatesto thecam driveofan: internal combustion engine, offthe type shown and described in a companion application,rSerial No.l 318,832 filed August 20, 1919; In!thatapplication.there is shown a four-cycle internal combustion vengine having exhaust valves operated by a cam shaft located below the cylinders parallel with the crank shaft and inverted vinlet valves operated directly by a cam shaft located on the top of the. engine. This invention is intended particularly for use where high speeds are required, as for instance, in racing engines and in aviation work.

The present invention relates: particularly to the mechanism for operating the overhead cam shaft from the exhaust cam shaft or crank shaft. As is well known to those skilled in the` art, considerable difcultyv has heretofore been experiencedowingto the fact that the vertical expansion of the cylinder block or any uneven alignment of the cam shaft results in disturbing therelation quently interferes with the best operation of the engine. The lpresent invention, therefor, has forv its object to provide mechanismfor driving the overhead cam shaft which will not be affected by ordinary variations in the position of the overhead cam shaft re-4 lgardless of the cause which produces them. The invention will be rfully understood from the following description when taken in connection with the accompanying drawings, and the novel features thereof will be of the driving gears to each other and conserag. se is' a section; Online; ase of-`Fig.. 2.

Referring. now tothedrawings, the-*ylinder 1s indicatedz atl 1=1, the exhaust; valve cylinder block 163.- The` inlet valve stem-is shown atv1-7"and.l is acted upon bya ,tappet 20 In the engine Yshown-:there are twoin-f let andtwo exhaust valves foreachcylinder,` and accordingly therevv areftwo inlet-cams KV1.9 xforeachA cylinder.4 The camshaft2fismounted.- in' suitable bearings 4,in the topoff'-A ahousing 21. It` will be: s een-that-the-'d-istanceA fromthe inlet camshaft-'2Q tothel bed t' off the enginel is.k considerable, :andthere-- fore that the expansion of the cylinder block, the removable head and the housing21 will disturbthe relation between the parts. To

we ,provide the following lso some suitable inanneiyas for instance, by

a key 24. .Secured to the arms of the spider l 23 are two rings 25 and 26 made of rub-y berizedfabric having several plysofsome .suitable flexible material, having suficient strength yfor the purpose required. At 27 yis n ,f

shown a second spider having arms located midway between the arms of the other .i

spider. Both spiders are secured by bolts or pins 321 to the said rubber disks 25 and 26. The spider 27 is provided with a sleeve- 28 which has a bore 331 therethroughlto receive the hub or sleeve 5 of a gear 31. The

gear 31 is keyed to *theV spider 27, as shown at 3, and the sleeve 5-0f said gear has abore G'ivhich is considerably larger than that portion of the cam shaftk 20 which passes Athroughit, so that the angle of the cam shaft 20 relative to the gear 31 may be varied slightly withoutl kany interference between the `cam shaft and the gear. The sleeve 5 isg j mounted in bearings 29 and 30 in 'a frame` member 36 which is itself secured to the engine bed 4 and is independent of the cylinder block, although it rests againstf it.

The gear 31 mesheswith a gear 32 which is driven by a gear 33 which meshes witha.

gear 34:. The gears 32 and 33 are mounted on studs 'T which are secured to the frame member 36, as shown in Figure 2. The gear 34 is secured to the exhaust Cain-shaft 13.

It will therefore be seen that there is an inverted universal joint between the cam shaft 2O and the gear 3l, so that the variation in the position of the cam shaft will not affect the true running ofthe gear 31. Furthermore, since the gear 31 is supported on the member 36 which is separate from the cylinder block, the difficulties arising Y from uneven expansion are much lessened.

What we claim is:

I 1. In an internal combustion engine,acylcylinder block, a gear, a support for said gear independent of the block, a sleeve on inder block, a cam shaft mounted on the which said gear is mounted having a central bore of greaterdiameter than the cam shaft through which the cam shaft passes, and a universal joint connecting the sleeve and the 2..Inv an internal combustion engine, an enginel cylinder having a valve, a cam shaft mounted on saidcylinder for operating said valve,fan actuating member for said cam .shaft rotatable about the same axis as the said cam shaft and independent thereof, a

universal joint between the saidy member and the said cam shaft, and means independent of said cylinder to support the said actuating member.

3. In an internal combustion engine, an

engine cylinder having a valve, a cam shaft mounted on said cylinder for operating said valve, a universal joint on one end of said cam shaft, an actuating member being loL cated between said 'universal jointA and the cylinder, and means for supporting said member independently of said cylinder. i

In testimony whereof we affix our signa tures.

STEPHEN i. FEKETE. I

STUART G. BAITS. 

